Slotting wall milling apparatus and method for milling a milling slot in a floor

Abstract

The invention relates to a slotting wall milling device, comprising a slotting wall milling machine having at least one milling frame unit and at least two milling wheels arranged in the longitudinal direction of the milling frame unit and configured for milling out a substantially vertical milling slot in a floor, a support structure for suspending the slotting wall milling machine in a milling position and moving it in a substantially vertical milling direction for opening the milling slot, and a transport device for transporting the slotting wall milling machine in a transport direction directed transversely to the milling direction. According to the invention, the transport device is configured for transporting the at least one milling frame unit with the two milling wheels in a transversely directed transport position, wherein the longitudinal direction of the milling frame unit is directed parallel to the transport direction, and an oscillating device is provided with which the milling frame unit with the milling wheels can be oscillated from the transversely directed transport position into the substantially vertical milling position.

Description

Technical Field

[0001] The present invention relates to a slotted wall milling apparatus comprising: a slotted wall milling machine having at least one milling frame unit and at least two milling wheels arranged in the longitudinal direction of the milling frame unit and configured to mill a substantially vertical slot in the bottom; a support structure for suspending the slotted wall milling machine in a milling position and moving it in a substantially vertical milling direction for opening the slot; and a conveying device for conveying the slotted wall milling machine in a conveying direction transverse to the milling direction.

[0002] Furthermore, the present invention also relates to a method for milling a groove in the bottom using a slotted wall milling machine, wherein a support structure and a conveying device are arranged therein, and a slotted wall milling machine with at least one milling frame unit and a milling wheel is conveyed to the work area by the conveying device in a conveying direction transverse to the milling direction, and the slotted wall milling machine is suspended at the support structure and moves in a substantially vertical milling direction, wherein the groove is formed in the bottom by milling away the bottom material. Background Technology

[0003] Grooving wall milling equipment can be used to create single trenches, slotted walls, or impermeable walls to depths of 100 meters and beyond. For example, these grooved walls or impermeable walls can be used to support foundation pits or create waterproofing sections. It is also feasible to use this milling machine to extract underground resources.

[0004] In certain situations, it is necessary to create walls using the slotting wall method inside or near buildings, in tunnels, or in confined spaces. For this reason, common transport equipment with large poles and large slotting wall milling machines cannot be used.

[0005] A compact slotting wall milling apparatus for slotting is known from EP 05 18 297 B1. This slotting wall milling apparatus has a track-guided carriage with a support and cantilever, the height of which is only slightly higher than the vertical length of the slotting wall milling machine. Rope reels for carrying ropes and connecting cables, and hose reels for supplying hoses, are supported near the ground on the support frame. The slotting wall milling machine is limited to critical components such as milling wheels, drive units, and pumps, in which the guide frame is constructed to a relatively small size.

[0006] Another compact slotting wall milling apparatus is known from EP 3 208 384 B1. In this apparatus, the compact slotting wall milling machine is adjustablely supported under a yoke, which is formed by two support devices arranged side by side. These two support devices are connected to each other via a swing hinge having a vertical swing axis.

[0007] In these known slotting wall milling machines, the insertion height is essentially limited by the height of the slotting wall milling machine. Here, the slotting wall milling machine cannot be arbitrarily reduced in size because specific dimensions are required for the milling wheels, drive unit, pump, and especially the guide frame.

[0008] This type of milling equipment is known from EP 3 719 207 A1. In this known slotted wall milling equipment, the slotted wall milling machine is divided into at least two milling modules, which are transported to the work area along a scaffold-like support structure using guiding devices. In the work area, the individual milling modules are assembled into a milling machine. The individual milling modules are here movably suspended along tracks along the covered area. Summary of the Invention

[0009] The purpose of this invention is to describe a slotted wall milling apparatus and method for milling grooves in the bottom, which enables efficient milling even in particularly confined spaces.

[0010] This objective is achieved both by using the slotted wall milling equipment according to the invention and by using the method according to the invention. Preferred embodiments of the invention are described in the corresponding dependent embodiments.

[0011] According to the present invention, the slotted wall milling equipment is characterized in that the conveying device is configured to convey at least one milling frame unit with two milling wheels in a laterally oriented conveying position, the longitudinal direction of the milling frame unit being oriented parallel to the conveying direction, and is provided with a swinging device that allows the milling frame unit and the milling wheels to swing from the laterally oriented conveying position to a substantially vertical milling position.

[0012] The basic idea of ​​this invention is as follows: at least one milling frame unit and at least two milling wheels are transported to the work area from a laterally oriented transport position (i.e., a horizontal position). This allows the grooving wall milling machine to be transported even in very confined conditions (e.g., in tunnels or buildings with low ceiling heights). Rails, roller carriers, or other traveling chassis can be used as the transport device. Preferably, the one or more milling frame units are supported thereon, thereby enabling the load to be borne simply from the bottom.

[0013] In the working area, the at least one milling frame unit can be swung from a laterally oriented or horizontally positioned transport position to a vertical position by means of a swing device together with the milling wheel. The swing is approximately 90°. In this case, the longitudinal direction of the slotted wall milling machine swings from a horizontal orientation to a vertical orientation corresponding to the milling direction. Any suitable device can be used for the swing device, such as a lever system and / or a rope system. For swinging, a receiving recess can be provided in the bottom into which the at least one milling frame unit swings in.

[0014] In the conveying position, the slotting wall milling machine is suspended at a supporting structure, which allows the machine to move in the vertical milling direction and carve slots via a rotary-driven milling wheel. The conveying of the milling suspension and / or the pumping of the milled material with the milling suspension can be carried out via appropriate pump units in a generally known manner.

[0015] A particularly preferred embodiment of the invention is that the conveying device has at least one track along which the at least one milling frame unit is movable. The at least one track may be arranged at the bottom or at the top. Preferably, multiple tracks are provided, wherein the at least one milling frame unit itself is provided with skids or rollers, or is movably supported along at least two parallel tracks via corresponding sliders or via a traveling chassis.

[0016] For ease of implementation, a preferred embodiment of the invention is that the slotting wall milling machine is preferably formed from a single milling frame unit, with the milling wheel supported at the milling frame unit. Thus, the milling frame unit with the milling wheel supported thereon forms a slotting wall milling machine that can swing to a milling position at the desired working location. Preferably, a receiving recess is introduced in the bottom, in which at least one milling frame unit with the milling wheel can swing downwards to a vertical milling position. The receiving recess may have a depth reaching the height of the slotting wall milling machine and preferably includes an arcuate side region for swinging.

[0017] In principle, the oscillating device for the components according to the invention can be constructed arbitrarily. An improvement according to the invention is advantageous in that the oscillating device is arranged at the conveying device and / or the supporting structure. The oscillating device may have an active oscillating drive, which, for example, has a drawstring winch and / or cylinder, which can induce the desired oscillating motion at at least one milling frame unit via a corresponding lever mechanism. The oscillating device may also have one or more oscillating hinges or oscillating tilting devices by which controlled oscillating motion of the milling frame unit can be implemented. The edge of the receiving recess at the bottom can be reinforced with a frame, especially a oscillating frame.

[0018] Another preferred embodiment of the invention involves arranging a plurality of milling frame units to form a slotted wall milling machine, wherein the milling wheels are supported at the milling frame units, and additionally at least one other milling frame unit is detachably mounted at the milling frame units. In essence, the individual milling frame units form modules that can be stacked and arranged on top of each other to thus collectively form the slotted wall milling machine. Dividing the slotted wall milling machine into multiple modular milling frame units facilitates transport under confined space conditions.

[0019] In a particular variation of the invention, the milling frame unit is connected to a correspondingly adjacent milling frame unit via at least one swing hinge. Thus, the milling frame units can be delivered already interconnected, or they can be directly interconnected at the working position via the swing hinge. The individual milling frame units can then be sequentially, preferably, swung into the receiving recess, wherein, since the individual milling frame units are connected via lateral swing hinges, they can be tracked almost automatically.

[0020] In principle, the milling frame units can be designed substantially the same. According to an improved embodiment of the invention, the first milling frame unit is configured with a milling wheel, and at least one additional milling frame unit is configured with a drive unit, a pump unit, a supply unit, a guide plate, and / or a holding device. Thus, in the assembled slotting wall milling machine, each milling frame unit is given a specific function. The slotting wall milling machine can be assembled from two, three, or more milling frame units arranged sequentially in the longitudinal direction of the machine.

[0021] One embodiment of the invention is particularly advantageous in that the slotted wall milling machine has two pairs of milling wheels, each pair of milling wheels being driven to rotate about a common milling wheel axis. The two milling wheel axes are arranged parallel and offset from each other. The milling wheels can be driven in the same direction or in opposite directions. Preferably, a suction device and / or an introduction device for suspended matter is provided between the milling wheels.

[0022] The method according to the invention is characterized in that at least one milling frame unit and milling wheel are conveyed by the conveying device in a laterally oriented conveying position, wherein the longitudinal direction of the milling frame unit is parallel to the conveying direction, and at least one milling frame unit and milling wheel are swung from the laterally oriented conveying position to a substantially vertical milling position by means of a swinging device.

[0023] The method according to the invention can be implemented, in particular, using the slotted wall milling equipment described above. The aforementioned advantages can be achieved here.

[0024] According to the invention, a preferred variation of the method involves pre-carving a receiving recess in the working area to form a milling groove, wherein the at least one milling frame unit and the milling wheel are swung into the receiving recess into a milling position. The receiving recess can be designed in particular in terms of its dimensions such that no increase or significant increase in the lateral horizontal position of the milling frame unit occurs during swivel. Inclined or curved regions can be provided on the side areas of the receiving recess to facilitate swivel into the bottom. Preferably, a frame for reinforcing the edges can be constructed along the receiving recess. The frame can also serve as a guide frame during milling. At least a portion of the swivel device for swiveling at least one milling frame unit can be constructed at the frame.

[0025] In principle, a slotting wall milling machine can be constructed from a single milling frame unit. A particularly preferred embodiment of the invention is that the slotting wall milling machine is assembled from multiple milling frame units in the working area. Thus, even with very limited top height, a slotting wall milling machine with a relatively long guide frame can be formed, allowing for particularly good guidance and thereby enabling precise opening of the specific positions of the milled slots.

[0026] In principle, this method can only create a single milling slot. A particularly advantageous aspect of the improved version according to the invention is the creation of at least two milling slots side-by-side, wherein after creating the first milling slot, the grooving wall milling machine is retracted from the first milling slot, and if necessary, retracted in the form of multiple milling frame units. To form another milling slot, the milling frame units are moved along the conveyor and reassembled into a grooving wall milling machine, which then descends into the bottom while milling away the bottom material. A second and further milling slots can then be created in the bottom, preferably directly side-by-side or spaced apart by approximately one slot length.

[0027] A particularly preferred embodiment of the invention involves filling at least one milled groove with a solidifiable suspension to form a grooved wall in the bottom, which hardens into the wall body. Thus, foundation elements or supporting walls and / or sealing walls can be created in the bottom using multiple adjacent, side-by-side milled grooves to enclose the foundation pit. Attached Figure Description

[0028] The present invention will now be further described with reference to preferred embodiments, which are schematically illustrated in the accompanying drawings. In the drawings: Figure 1 A schematic side view of the first slotting wall milling apparatus according to the present invention is shown; Figure 2 This shows a first schematic side view of another slotting wall milling apparatus according to the invention as it is being conveyed to the work area; Figure 3 show Figure 2 A schematic diagram of the slotting wall milling equipment being placed into the receiving recess; and Figure 4 show Figure 2 and Figure 3 A schematic diagram of a slotted wall milling machine in the milling position. Detailed Implementation

[0029] according to Figure 1 The first slotting wall milling apparatus 10 according to the invention is arranged in a tunnel 2 having a top region 4 and a bottom region 6, wherein a receiving recess 7 with an arcuate side region 8 is introduced into the bottom region. A load-bearing structure 12 with a top beam 13, shown only schematically, is arranged along the tunnel 2. A conveying device 14 with a track 15 is arranged along the bottom region 6. The conveying device 14 can be connected to the load-bearing structure 12 via a vertical support (not shown) and forms part of the load-bearing structure.

[0030] As illustrated by dashed lines, the slotting wall milling machine 30 is conveyed along the horizontal conveying direction Z in a laterally pointing or horizontal position along the conveying device 14. In the illustrated embodiment, the slotting wall milling machine 30 is configured with a single milling frame unit 32, on the underside of which two pairs of milling wheels 40 are arranged. A suction device 42 may be arranged above the milling wheels 40 for suctioning the milled bottom material.

[0031] like Figure 1 As shown in the diagram, when the work area is reached, the milling frame unit 32 of the slotted wall milling machine 30 can be swung into the receiving recess 7 at approximately 90° in the milling position by means of the swing device 20, which has a horizontally oriented swing axis S that is transverse to the conveying direction Z.

[0032] In the milling position, the milling wheel 40 of the slotted wall milling machine 30 points downwards, wherein the longitudinal direction of the milling frame unit 32 is generally vertically oriented. The slotted wall milling machine 30 is suspended at the support structure 12 and can be vertically lowered into the bottom 6 via a holding device (not shown) with at least one support rope, and then retracted from the bottom 6. The power supply device and the supply and / or discharge of the suspended load can be achieved via a line (not shown) supported on a line reel along the support structure 12.

[0033] according to Figures 2 to 4An alternative slotting wall milling device 10 is shown, which is constructed from two milling frame units 32. Here, the milling wheel 40 is supported at the first milling frame unit 32a. A second milling frame unit 32b is disposed adjacent to the first milling frame unit 32a and is pivotally connected to the first milling frame unit 32a via a pivot hinge 34.

[0034] according to Figure 2 To achieve this, the slotting wall milling machine 30 uses two milling frame units 32a and 32b to transport materials along a support structure (not shown) and a conveying device (not shown), which can be adjusted according to... Figure 1 The implementation plan is constructed.

[0035] Upon arrival according to Figure 3 When in the working area, the first milling frame unit 32a can be swung downward about 90° into the receiving recess 7 by means of a swinging device (not shown in detail) around the swinging hinge 34.

[0036] like Figure 4 As intuitively implemented, the second milling frame unit 32b can then rotate around the swing hinge 34 of the first milling frame unit 32a.

[0037] The two milling frame units 32a and 32b can be securely connected to each other in the assembled vertical position via a releasable connecting device (not shown in detail), so that milling can then be performed by lowering the slotted wall milling machine 30 into the bottom 6. Here, the slotted wall milling machine 30 can move vertically via a support rope that serves as a holding device 18 at the load-bearing structure.

[0038] After reaching the final depth, the slotting wall milling machine 30 can retract from the milling slot again, wherein the individual milling frame units 32 then release from each other again and swing back about the swing hinge 34 according to the... Figure 2 In horizontal or lateral conveying positions.

[0039] In the two illustrated embodiments, the slotted wall milling machine 10 or the respective milling frame units 32a and 32b oscillate about an axis parallel to the rotation axis of the milling wheels. It is equally possible, and covered by the invention, for the milling wheels 40 to oscillate about an axis perpendicular to the rotation axis of the milling wheels 40, preferably horizontal; that is, in the horizontal position, the two pairs of milling wheels 40 are arranged side-by-side rather than overlapping each other.

Claims

1. A slotting wall milling machine, comprising: A slotting wall milling machine (30) having at least one milling frame unit (32) and at least two milling wheels (40) arranged in the longitudinal direction of the milling frame unit (32) and configured to mill a substantially vertical slot in the bottom (6). A supporting structure (12) for suspending the slotting wall milling machine (30) in a milling position and moving it in a substantially vertical milling direction for opening milled slots, and A conveying device (14) for conveying the slotted wall milling machine (30) in a conveying direction transverse to the milling direction. Its features are, The conveying device (14) is configured to convey at least one milling frame unit (32) and two milling wheels (40) in a laterally oriented conveying position, wherein the longitudinal direction of the milling frame unit (32) is parallel to the conveying direction, and A swinging device (20) is provided, which enables the milling frame unit (32) and the milling wheel (40) to swing from a laterally oriented transport position to a substantially vertical milling position.

2. The slotting wall milling equipment according to claim 1, characterized in that, The conveying device (14) has at least one track (15), and the at least one milling frame unit (32) is capable of moving along the track (15).

3. The slotting wall milling equipment according to claim 1 or 2, characterized in that, The slotted wall milling machine (30) is formed by a single milling frame unit (32), and the milling wheel (40) is supported at the single milling frame unit (32).

4. The slotting wall milling equipment according to claim 1 or 2, characterized in that, The swing device (20) is arranged at the conveying device (14) and / or the supporting structure (12).

5. The slotting wall milling equipment according to claim 1 or 2, characterized in that, Multiple milling frame units (32) are provided for forming a slotted wall milling machine (30), wherein the milling wheel (40) is supported at the milling frame unit (32), and additionally at least one other milling frame unit (32) is releasably disposed at the milling frame unit (32).

6. The slotting wall milling equipment according to claim 5, characterized in that, The milling frame unit (32) is connected to the corresponding adjacent milling frame unit (32) via at least one swing hinge (34).

7. The slotting wall milling equipment according to claim 5, characterized in that, The first milling frame unit (32) is configured to have the milling wheel (40), and at least one additional milling frame unit (32) is configured to have a drive unit, a pump unit, a supply unit, a guide plate and / or a holding device.

8. The slotting wall milling equipment according to any one of claims 1 or 2, characterized in that, The slotted wall milling machine (30) has two pairs of milling wheels (40).

9. A method for milling a milled groove in the bottom using a slotted wall milling apparatus (10) according to any one of claims 1 to 8. in, Arrange the load-bearing structure (12) and the conveying device (14), A slotting wall milling machine (30) with at least one milling frame unit (32) and milling wheel (40) is conveyed to the work area by a conveying device (14) in a conveying direction transverse to the milling direction, and The slotting wall milling machine (30) is suspended on the supporting structure (12) and moved in a substantially vertical milling direction, wherein a milling groove is formed in the bottom (6) by milling away the bottom material. Its features are, The milling frame unit (32) and the milling wheel (40) are conveyed by the conveying device (14) in a laterally oriented conveying position, wherein the longitudinal direction of the milling frame unit (32) is parallel to the conveying direction, and The at least one milling frame unit (32) and the milling wheel (40) are swung from the laterally oriented transport position to a substantially vertical milling position by means of a swing device (20).

10. The method according to claim 9, characterized in that, A receiving recess (7) is pre-cut in the working area to form a milling groove, and the at least one milling frame unit (32) and the milling wheel (40) are swung into the receiving recess to the milling position.

11. The method according to claim 9 or 10, characterized in that, The slotted wall milling machine (30) is assembled from multiple milling frame units (32) in the working area.

12. The method according to claim 9 or 10, characterized in that, At least two milling slots are opened side by side, wherein, after the first milling slot is opened, the grooving wall milling machine (30) is retracted from the first milling slot, and In order to form another milling groove, the milling frame unit (32) is moved along the conveyor (14) and reconnected to the slotting wall milling machine (30), which then descends into the bottom (6) while milling away the bottom material.

13. The method according to claim 12, characterized in that, The slotted wall milling machine (30) is retracted from the first milling slot while the plurality of milling frame units (32) are separated.

14. The method according to claim 9 or 10, characterized in that, In order to form a slotted wall in the bottom (6), the at least one milled groove is filled with a solidifiable suspension that hardens into the slotted wall.

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